This series (http://henryaltemus.com/series/series37.htm) is the earliest of all of Altemus’ publisher’s series. It was published between 1892 and 1897.

There are 41 books in Format 1. As opposed to other Altemus publisher’s series, each book in Format 1 has a different cover design.

Here is a new picture for the database. It is book #33 of Format 1.